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合金摆件 铸造安全技术规范
Alloy ornaments-Safety technical regulations for casting
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金覆盖层电铸摆件
Electroformed ornaments of gold coatings
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毛坯钻石检验和分级
Rough diamond inspection and grading
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首饰 贵金属含量的无损检测 密度综合法
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贵金属饰品
Precious metal adornment
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贵金属饰品术语
Terms of precious metal adornment
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铂、钯饰品合金成分
Composition of Platnium & Palladium alloy adornments
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摆件 术语
Ornaments Term
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鸡血石制品 分级
Products of Chicken-blood stones Grading
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观赏石摆件 命名及鉴定
View stone ornaments Designation and Identification
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